Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
sach ky » sac ky, sach y, sach ty
ve cao » va cao, ve cac, ve co
ve bao » te bao, va bao
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang x hoi. hieu ((ve cao) OR (ve bao)) duc va thanh va ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang x hoi. hieu ((ve cao) OR (ve bao)) duc va thanh va ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang x hoi. hieu ((ve cao) OR (ve bao)) duc va thanh va ((cua te) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang x hoi. hieu ((ve cao) OR (ve bao)) duc va thanh va ((cua te) or (cua tu))*.